buf_inorder
if (buf_inorder(bp, bq, sortby)) {
if (buf_inorder(nbq, bq, sortby)) {
if (buf_inorder(bp, nbq, sortby))
if (buf_inorder(nbq, bq, sortby) ||
buf_inorder(bp, nbq, sortby))
if (buf_inorder(b2, b1, sortby)) {
if (buf_inorder(b1, b2, sortby)) {
if (buf_inorder(prio->bq_write_next, bp, sortby))
while (bq != NULL && buf_inorder(bq, bp, sortby))
static __inline bool buf_inorder(const struct buf *, const struct buf *, int)